package com.wangwq.myspringredis.config;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import org.springframework.cache.CacheManager;
import org.springframework.cache.annotation.CachingConfigurerSupport;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.cache.interceptor.KeyGenerator;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheManager;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;
import  com.fasterxml.jackson.databind.ObjectMapper;
import java.lang.reflect.Method;

@Configuration
@EnableCaching
public class RedisConfig extends CachingConfigurerSupport {


    //默认生成key
    @Override
    public KeyGenerator keyGenerator() {
        return new KeyGenerator() {
            @Override
            public Object generate(Object target, Method method, Object... objects) {
                StringBuilder sb  = new StringBuilder();
                sb.append(target.getClass().getName());
                sb.append("_").append(method.getName());

                StringBuilder  objectsSb = new StringBuilder();
                for (Object obj: objects ) {
                    if (obj != null){
                        objectsSb.append(obj.toString());
                    }
                }

                if(objectsSb.length() > 0){
                    sb.append("_").append(objectsSb.toString());
                }
                return sb.toString();
            }
        };
    }

    @Bean
    public CacheManager cacheManager(RedisTemplate redisTemplate) {
        RedisCacheManager redisCacheManager = new RedisCacheManager(redisTemplate);
        return redisCacheManager;
    }


    public RedisTemplate<String,String> redisTemplate(RedisConnectionFactory redisConnectionFactory){
        StringRedisTemplate template = new StringRedisTemplate(redisConnectionFactory);
        Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
        ObjectMapper om = new ObjectMapper();
        om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        jackson2JsonRedisSerializer.setObjectMapper(om);
        template.setValueSerializer(jackson2JsonRedisSerializer);
        template.afterPropertiesSet();

        return template;
    }
}
